mirror of https://github.com/PentHertz/srsLTE.git
90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#ifndef SRSRAN_SYS_METRICS_PROCESSOR_H
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#define SRSRAN_SYS_METRICS_PROCESSOR_H
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#include "srsran/srslog/logger.h"
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#include "srsran/system/sys_metrics.h"
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#include <chrono>
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#include <string>
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namespace srsran {
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/// Process information from the system to create sys_metrics_t. The information is processed from the /proc/ system.
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class sys_metrics_processor
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{
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/// Helper class used to parse the information from the /proc/[pid]/stats.
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struct proc_stats_info {
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proc_stats_info();
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// Initialize the variables that will be used.
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int32_t num_threads = 0;
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uint32_t utime = 0;
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uint32_t stime = 0;
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// Rest of the information of the stats file.
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int32_t pid, ppid, pgrp, session, tty_nr, tpgid, exit_signal, processor, exit_code, cutime, cstime, priority, nice,
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itrealvalue, rss, cguest_time;
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uint32_t minflt, cminflt, majflt, cmajflt, vsize, rsslim, startcode, endcode, startstack, kstkesp, kstkeip, signal,
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blocked, sigignore, sigcatch, wchan, nswap, cnswap, guest_time, start_data, end_data, start_brk, arg_start,
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arg_end, env_start, env_end, flags, rt_priority, policy;
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uint64_t starttime, delaycct_blkio_ticks;
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uint8_t state;
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std::string comm;
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};
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/// Helper class to read the cpu metrics.
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struct cpu_metrics_t {
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std::string name = "";
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int32_t user = 0;
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int32_t nice = 0;
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int32_t system = 0;
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int32_t idle = 0;
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int32_t iowait = 0;
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int32_t irq = 0;
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int32_t softirq = 0;
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};
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public:
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explicit sys_metrics_processor(srslog::basic_logger& logger);
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/// Measures and returns the system metrics.
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sys_metrics_t get_metrics();
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private:
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/// Calculates and returns the cpu usage in %. current_query is the most recent proc_stats_info, and
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/// delta_time_in_seconds is the elapsed time between the last measure and current in seconds. NOTE: Returns -1.0f on
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/// error.
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float calculate_cpu_usage(const proc_stats_info& current_query, float delta_time_in_seconds) const;
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/// Calculate the memory parameters and writes them in metrics.
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/// NOTE: on error, metrics memory parameters are set to 0.
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void calculate_mem_usage(sys_metrics_t& metrics) const;
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/// Calculate the cpu metrics and stores them in the given metrics. delta_time_in_seconds is the number of seconds
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/// elapsed since the last cpu metrics measurement.
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void calculate_cpu_metrics(sys_metrics_t& metrics, float delta_time_in_seconds);
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/// Returns the cpu metrics from the given line.
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cpu_metrics_t read_cpu_idle_from_line(const std::string& line) const;
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private:
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srslog::basic_logger& logger;
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proc_stats_info last_query = {};
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cpu_metrics_t last_cpu_thread[metrics_max_supported_cpu] = {};
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std::chrono::time_point<std::chrono::steady_clock> last_query_time = std::chrono::steady_clock::now();
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};
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} // namespace srsran
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#endif // SRSRAN_SYS_METRICS_PROCESSOR_H
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